Winterizing Hose??

[Noah4448]

I have a Sunseeker 2400MBS. Underneath the shower is the winterizing switch. There is a panel you can take off to the left of the switch to access the water pump. When you open the panel a short hose comes out and it has a cap on the end.
1. When you turn the winterizing switch to winterize what does the shutoff? And if you shut it off do you also have to access the three switches under the stove that are behind the hot water heater and turn those to divert the water from the hot water tank?
2. What is the short hose for?

[Kimber45]

my simple guess based on my 5th wheel docking station is the short hose with the cap sucks up anti freeze from the bottle while winterizing?

[RedLdr1]

Originally Posted by Noah4448

1. When you turn the winterizing switch to winterize what does the shutoff?

Turning the switch disconnects the water pump from the fresh water tank. The water pump will now be connected to the short hose.

Originally Posted by Noah4448

2. What is the short hose for?

Winterizing the water system. You place the hose in the jug of RV antifreeze and turn on the water pump. The pump will then draw in the antifreeze to winterize the pipes. You'll need around 4-5 gallons of antifreeze.

Originally Posted by Noah4448

And if you shut it off do you also have to access the three switches under the stove that are behind the hot water heater and turn those to divert the water from the hot water tank?

Do this before you add antifreeze. Those valves allow you to bypass the water heater and effectively connect the hot and cold pipes in to one system. If you don't engage the bypass you would have to fill the water heater with antifreeze, which will take several gallons , before it would flow in to the hot water side piping. After you bypass the water heater go outside and drain it for the winter. Make sure to release the pressure valve before you remove the tank drain plug or you'll get a very high pressure shower...

There are several threads in the Mercedes Motor Home sub forum with a lot of good info on how to winterize, and de-winterize your coach.